20986556

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{167}}^1\times {\mathrm{353}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 37467360

約数和(自身を除く): 16480804

約数列:

[1, 2, 4, 89, 167, 178, 334, 353, 356, 668, 706, 1412, 14863, 29726, 31417, 58951, 59452, 62834, 117902, 125668, 235804, 5246639, 10493278, 20986556]

約数ペア:

[(1, 20986556), (2, 10493278), (4, 5246639), (89, 235804), (167, 125668), (178, 117902), (334, 62834), (353, 59452), (356, 58951), (668, 31417), (706, 29726), (1412, 14863)]